*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;   
}
li{
    list-style: none;
}
.center{
    width: 400px;
    height: 500px;
    margin: 50px auto;
    border: 1px black solid;
    border-radius: 30px;
}
.borady{
    height: 50px;
    display: block;
    text-align: center;
    line-height: 50px;
    border-bottom: 1px solid black;
    
}
.datenow{
    height: 50px;
    
}
.body{
    height: 450px;
    padding: 0 50px 0;

}
.body>ul{
    border-radius: 10px;
}
.datenow{
    height: 50px;
    width: 149px;
    font:400 20px '微软雅黑';
    line-height: 50px;
    float: left;
    text-align: center;
}

.text{
    float: left;
    height: 350px;
    width: 300px;
    border: 1px solid black;
    position: relative;
    text-align: center;
    overflow: hidden;
}
.first{
    width: 300px;
    height: 350px;
    position: absolute;
    top: 0;
    left: 0;
    transition: all 0.5s;
}
.first>li{
    float: left;
    width: 148px;
    height: 58px;
    line-height: 58px;
}
.double{
    width: 300px;
    height: 350px;
    position: absolute;
    top: 0;
    left: 300px;
    transition: all 0.5s;

}
.double>li{
    float: left;
    width: 148px;
    height: 58px;
    line-height: 58px;
}
.button{
    width: 300px;
    height: 50px;
    float: left;
    margin-top: 10px;
}
.button>span{
    text-align: center;
    line-height: 30px;
    width: 80px;
    height: 30px;
    border: 1px solid black;
}
.left{
    float: left;
}
.right{
    float: right;
}